Control system for controlling the suspension of a land vehicle
First Claim
1. A land vehicle suspension system of the kind comprising a suspension linkage connected between a sprung mass of the vehicle and at least one unsprung mass of the vehicle;
- actuator means for controlling the position of the suspension linkage;
means for measuring the loads transmitted to the sprung mass by the actuator means;
means for producing signals proportional to the values of said measured loads;
means for modifying said signals to compensate for unmeasured loads between the sprung mass and the at least one unsprung mass acting via load paths in the suspension linkage which do not include the actuator means; and
means for controlling the actuator means to apply forces to control the attitude of the vehicle in dependence on said modified signals.
3 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to an active suspension system for controlling the suspension of a wheeled land vehicle, which comprises an actuator (31) of variable length in parallel with a spring (34), connected between the body or chassis of a vehicle and a wheel and hub assembly (40) of such. The extension/contraction of the actuator is controlled by a control unit (60) in response to parameters measured by various sensors (61, 64, 65, 66 and 62). The control unit (60) also makes allowance for loads on the vehicle not measured by the sensors, so that accurate control of the suspension system is achieved.
54 Citations
9 Claims
-
1. A land vehicle suspension system of the kind comprising a suspension linkage connected between a sprung mass of the vehicle and at least one unsprung mass of the vehicle;
- actuator means for controlling the position of the suspension linkage;
means for measuring the loads transmitted to the sprung mass by the actuator means;
means for producing signals proportional to the values of said measured loads;
means for modifying said signals to compensate for unmeasured loads between the sprung mass and the at least one unsprung mass acting via load paths in the suspension linkage which do not include the actuator means; and
means for controlling the actuator means to apply forces to control the attitude of the vehicle in dependence on said modified signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- actuator means for controlling the position of the suspension linkage;
Specification